Sharp SC-103H Service Manual page 23

FM IF ALIGNMENT
Signal Generator
PROCEDURE
'
Dial Pointer
Function
Scope
Adjustment Remarks
Detune T903 completely.
Set curve at maximum
as shown in the Figure
46-A
Repeat 2 or 3 times.
+ ,
to TP801 | = 300KHz,
of Dial
Stereo
7902
Adjust ''S" curve at
Same as above 30.7MHz
High end
FM
maximum,
a
of Dial
Stereo
Adjust 10.7MHz at the
center of 'S"' curve,
Repeat adjustments to obtain "S'' curve as shown in Figure 46.
PRECAUTIONS ON DETUNING
Turn the core of T903 two or more times.
FM-IF
CHARACTERISTIC
10.7 MHz
SWEEP
SIGNAL GENERATOR
(2)
OSCILLOSCOPE
10.7MHz, 300kHz
Ground
-
@®
SIGN GENERATOR (3)
|
L
10.7MHz,
300kHz
TP904 or
10.7MHz
"s" CURVE
Figure 47 FM IF ALIGNMENT EQUIPMENT CONNECTIONS
23